Their seven-game winning streak has pushed the Nats' lead in the NL East to six games over the second-place Atlanta Braves, the biggest division lead in the NL at the moment.

Wondering how the three straight walk-offs size up historically? MLB.com's Jamie Ross has the factoids:

The Nationals are the second team to string together three in a row this season. The Rays accomplished the feat in late May with a win over the A's and a pair over the Red Sox. The Phillies and Rangers both did it 2013.

The 1986 Astros hold the record for consecutive walk-off wins with five.

Do the Nationals' magic wands have two more nights of walk-off drama in them? We'll find out Tuesday. But after two straight extra-inning wins and three straight nail-biters, the Nats would probably be just fine winning a game that's decided by a comfortable margin.